A. Markowitz

11.9k total citations · 1 hit paper
78 papers, 2.1k citations indexed

About

A. Markowitz is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Radiation. According to data from OpenAlex, A. Markowitz has authored 78 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 76 papers in Astronomy and Astrophysics, 35 papers in Nuclear and High Energy Physics and 7 papers in Radiation. Recurrent topics in A. Markowitz's work include Astrophysical Phenomena and Observations (75 papers), Galaxies: Formation, Evolution, Phenomena (42 papers) and Astrophysics and Cosmic Phenomena (34 papers). A. Markowitz is often cited by papers focused on Astrophysical Phenomena and Observations (75 papers), Galaxies: Formation, Evolution, Phenomena (42 papers) and Astrophysics and Cosmic Phenomena (34 papers). A. Markowitz collaborates with scholars based in United States, United Kingdom and Germany. A. Markowitz's co-authors include Rick Edelson, S. Vaughan, J. N. Reeves, M. Krumpe, R. E. Rothschild, T. J. Turner, Robert Nikutta, Ken Pounds, P. D. Dobbie and P. Uttley and has published in prestigious journals such as The Astrophysical Journal, Monthly Notices of the Royal Astronomical Society and The Astrophysical Journal Supplement Series.

In The Last Decade

A. Markowitz

74 papers receiving 2.0k citations

Hit Papers

False periodicities in quasar time-domain surveys 2016 2026 2019 2022 2016 50 100 150
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. False periodicities in quasar time-domain surveys
    2016 178 citations P. Uttley, A. Markowitz et al. Monthly Notices of the Royal Astronomical Society profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
A. Markowitz United States 25 2.1k 1.0k 94 92 81 78 2.1k
P. Arévalo Chile 24 1.9k 0.9× 706 0.7× 46 0.5× 66 0.7× 97 1.2× 69 2.0k
M. Santos‐Lleó Spain 24 2.0k 1.0× 879 0.9× 34 0.4× 98 1.1× 90 1.1× 73 2.1k
W. Brinkmann Germany 23 1.8k 0.9× 1.1k 1.1× 112 1.2× 34 0.4× 88 1.1× 123 1.9k
S. Sazonov Russia 27 2.4k 1.1× 1.1k 1.1× 81 0.9× 41 0.4× 81 1.0× 127 2.5k
R. S. Warwick United Kingdom 28 2.4k 1.1× 1.2k 1.2× 162 1.7× 112 1.2× 104 1.3× 91 2.5k
C. R. Shrader United States 24 1.7k 0.8× 762 0.7× 175 1.9× 200 2.2× 43 0.5× 66 1.8k
M. R. Goad United Kingdom 29 2.7k 1.3× 730 0.7× 76 0.8× 91 1.0× 149 1.8× 109 2.8k
E. Nardini Italy 28 2.5k 1.2× 899 0.9× 43 0.5× 112 1.2× 84 1.0× 88 2.5k
A. R. Rao India 19 1.3k 0.6× 588 0.6× 116 1.2× 106 1.2× 41 0.5× 158 1.4k
K. A. Pounds United Kingdom 22 1.7k 0.8× 713 0.7× 54 0.6× 52 0.6× 70 0.9× 65 1.7k

Countries citing papers authored by A. Markowitz

Since Specialization
Citations

This map shows the geographic impact of A. Markowitz's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by A. Markowitz with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites A. Markowitz more than expected).

Fields of papers citing papers by A. Markowitz

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by A. Markowitz. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by A. Markowitz. The network helps show where A. Markowitz may publish in the future.

Co-authorship network of co-authors of A. Markowitz

This figure shows the co-authorship network connecting the top 25 collaborators of A. Markowitz. A scholar is included among the top collaborators of A. Markowitz based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with A. Markowitz. A. Markowitz is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Markowitz, A., D. Homan, B. Czerny, et al.. (2025). Multiwavelength study of extreme variability in LEDA 1154204: A changing-look event in a type 1.9 Seyfert. Astronomy and Astrophysics. 702. A28–A28.
2.
Markowitz, A., et al.. (2025). Markarian 590: the AGN awakens. Monthly Notices of the Royal Astronomical Society Letters. 540(1). L14–L20. 2 indexed citations
3.
Krumpe, M., A. Markowitz, Gene C. K. Leung, et al.. (2025). The Close AGN Reference Survey (CARS). Astronomy and Astrophysics. 699. A205–A205.
4.
Markowitz, A., et al.. (2023). Discovery of the luminous X-ray ignition eRASSt J234402.9−352640. Astronomy and Astrophysics. 672. A167–A167. 13 indexed citations
5.
Liu, Teng, A. Malyali, M. Krumpe, et al.. (2022). Deciphering the extreme X-ray variability of the nuclear transient eRASSt J045650.3−203750. Astronomy and Astrophysics. 669. A75–A75. 46 indexed citations
6.
Mallick, Labani, A. C. Fabian, Javier A. García, et al.. (2022). High-density disc reflection spectroscopy of low-mass active galactic nuclei. Monthly Notices of the Royal Astronomical Society. 513(3). 4361–4379. 17 indexed citations
7.
Różáńska, A., et al.. (2021). Spectral state transitions in Circinus ULX5. Springer Link (Chiba Institute of Technology). 7 indexed citations
8.
Różáńska, A., et al.. (2021). Evidence for Fe Kα line and soft X-ray lag in NGC 7456 ultraluminous X-ray source-1. Monthly Notices of the Royal Astronomical Society Letters. 505(1). L106–L111. 4 indexed citations
9.
Krauß, F., M. Kreter, Cornelia Müller, et al.. (2018). Investigating source confusion in PMN J1603–4904. UvA-DARE (University of Amsterdam). 1 indexed citations
10.
Beuchert, Tobias, A. Markowitz, Thomas Dauser, et al.. (2017). ASuzaku,NuSTAR,andXMM-Newtonview on variable absorption and relativistic reflection in NGC 4151. Astronomy and Astrophysics. 603. A50–A50. 19 indexed citations
11.
Kreikenbohm, A., R. Schulz, M. Kadler, et al.. (2015). The gamma-ray emitting radio-loud narrow-line Seyfert 1 galaxy PKS 2004−447. Astronomy and Astrophysics. 585. A91–A91. 16 indexed citations
12.
Hemphill, Paul B., R. E. Rothschild, A. Markowitz, et al.. (2014). A CLUMPY STELLAR WIND AND LUMINOSITY-DEPENDENT CYCLOTRON LINE REVEALED BY THE FIRSTSUZAKUOBSERVATION OF THE HIGH-MASS X-RAY BINARY 4U 1538–522. The Astrophysical Journal. 792(1). 14–14. 24 indexed citations
13.
Grinberg, V., K. Pottschmidt, M. Böck, et al.. (2014). Long term variability of Cygnus X-1. Astronomy and Astrophysics. 565. A1–A1. 54 indexed citations
14.
Rivers, E., A. Markowitz, & R. E. Rothschild. (2011). AN OCCULTATION EVENT IN CENTAURUS A AND THE CLUMPY TORUS MODEL. The Astrophysical Journal Letters. 742(2). L29–L29. 23 indexed citations
15.
Markowitz, A. & J. N. Reeves. (2009). ASUZAKUOBSERVATION OF NGC 4593: ILLUMINATING THE TRUNCATED DISK. The Astrophysical Journal. 705(1). 496–508. 18 indexed citations
16.
Papadakis, I. E., M. Sobolewska, P. Arévalo, et al.. (2008). A correlation between the spectral and timing properties of AGN. Springer Link (Chiba Institute of Technology). 14 indexed citations
17.
Papadakis, I. E., E. Chatzopoulos, Dimitrios I. Athanasiadis, A. Markowitz, & I. Georgantopoulos. (2008). The long-term X-ray variability properties of AGNs in the Lockman Hole region. Astronomy and Astrophysics. 487(2). 475–483. 26 indexed citations
18.
Porquet, D., P. Uttley, A. Markowitz, et al.. (2007). A 100 ks XMM-Newton view of the Seyfert 1.8 ESO 113-G010. Astronomy and Astrophysics. 473(1). 67–76. 6 indexed citations
19.
Porquet, D., J. N. Reeves, A. Markowitz, et al.. (2006). An XMM-Newton view of the X-ray flat radio-quiet quasar PG 1416-129. Springer Link (Chiba Institute of Technology). 2 indexed citations
20.
Uttley, Philip, Rick Edelson, I. M. McHardy, B. M. Peterson, & A. Markowitz. (2003). Correlated Long-Term Optical and X-Ray Variations in NGC 5548. The Astrophysical Journal. 584(2). L53–L56. 75 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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